Uplink power control in new radio (NR)
Aspects of the present disclosure implement techniques for power control management between the base station and the UE to support multiple waveforms and services. In one example, the power control management system may implement independent power control loops for each waveform and service (e.g., eMBB, uRLLC, etc.) supported by the wireless communication system. For example, the base station may transmit a first power control command to a UE for first waveform (e.g., CP-OFDM) or service (e.g., eMBB) and a second power control command to the UE for the second waveform (DFT-OFDM) or service (e.g., uRLLC). Features of the present disclosure may also implement techniques that allow the base station to transmit a single power control command for configuring the power control for a plurality of waveforms or services. Upon receiving the power control commands, the UE may configure the transmission power for uplink traffic based on the power control commands.
1. A method for wireless communications, comprising:
establishing, at a base station, communication with a user equipment (UE);
determining that the UE supports uplink communication over a plurality of services;
configuring power control parameters for at least one service from the plurality of services supported by the UE; and
transmitting a single power control command to the UE for the UE to configure transmission power, based on the single power control command, for each of the plurality of services for the uplink communication.
2. The method of claim 1 , wherein configuring the power control parameters for the at least one waveform from the plurality of services supported by the UE, comprises:
configuring, based on a first power control loop, first power control parameters associated with a first service from the plurality of services supported by the UE; and
configuring, based on a second power control loop, second power control parameters associated with a second service from the plurality of services supported by the UE,
wherein the first power control loop is independent of the second power control loop.
3. The method of claim 1 , wherein the plurality of services include at least one of enhanced Mobile Broadband (eMBB) or ultra-reliable low latency communication (uRLLC) services.
4. The method of claim 1 , further comprising:
determining that the UE supports uplink communication over a plurality of waveforms; and
configuring the power control parameters for at least one waveform from the plurality of waveforms supported by the UE.
5. The method of claim 4 , wherein configuring the power control parameters for the at least one waveform from the plurality of waveforms supported by the UE, comprises:
correlating power control parameters for the plurality of waveforms with the single power control command.
6. The method of claim 4 , wherein the plurality of waveforms include at least one of cyclic prefix orthogonal frequency division multiple access (CP-OFDM)) or discrete fourier transform orthogonal frequency division multiple access (DFT-OFDM) waveforms.
7. The method of claim 1 , wherein configuring the power control parameters for the at least one service from the plurality of services supported by the UE, comprises:
correlating power control parameters for the plurality of services with the single power control command.
8. The method of claim 1 , wherein configuring the power control parameters for the at least one service from the plurality of service supported by the UE, comprises:
configuring first power control parameters associated with a first service from the plurality of services supported by the UE,
wherein the first power control parameters are used by the UE to calculate a first transmission power for the first service and a second transmission power for the second service based at least in part on the first control parameters.
9. The method of claim 8 , wherein the second transmission power for the second service is calculated by applying a delta offset value to the first transmission power for the first service.
10. The method of claim 9 , wherein the delta offset value is derived by the base station based on an offset function of one or more of modulation coding scheme (MCS), resource block allocations, single input multiple output (SIMO) capabilities, or multiple input multiple output (MIMO) capabilities.
11. The method of claim 1 , further comprising:
transmitting an indication of at least one delta offset value from a plurality of delta offset values for the UE to calculate transmission power for a second service from the plurality of services based on receiving the single power control command associated with a first service from the plurality of services.
12. An apparatus for wireless communications comprising:
a memory configured to store instructions; and
a processor communicatively coupled with the memory, wherein the processor is configured to execute the instructions to:
establish, at a base station, communication with a user equipment (UE);
determine that the UE supports uplink communication over a plurality of services;
configure power control parameters for at least one service from the plurality of services supported by the UE; and
transmit a single power control command to the UE for the UE to configure transmission power, based on the single power control command, for each of the plurality of services for the uplink communication.
13. The apparatus of claim 12 , wherein the instructions to configure the power control parameters for the at least one waveform from the plurality of services supported by the UE, further comprises instructions to:
configure, based on a first power control loop, first power control parameters associated with a first service from the plurality of services supported by the UE; and
configure, based on a second power control loop, second power control parameters associated with a second service from the plurality of services supported by the UE,
wherein the first power control loop is independent of the second power control loop.
14. The apparatus of claim 12 , wherein the instructions are further executable to:
determine that the UE supports uplink communication over a plurality of waveforms; and
configure the power control parameters for at least one waveform from the plurality of waveforms supported by the UE.
15. The apparatus of claim 14 , wherein the instructions to configure the power control parameters for the at least one waveform from the plurality of waveforms supported by the UE further include instructions to:
correlate power control parameters for the plurality of waveforms with the single power control command.
16. The apparatus of claim 13 , wherein the plurality of waveforms include at least one of cyclic prefix orthogonal frequency division multiple access (CP-OFDM)) or discrete fourier transform orthogonal frequency division multiple access (DFT-OFDM) waveforms.
17. The apparatus of claim 12 , wherein the instructions to configure the power control parameters for the at least one service from the plurality of services supported by the UE are further executable to:
correlate power control parameters for the plurality of services with the single power control command.
18. The apparatus of claim 12 , wherein the instructions to configure the power control parameters for the at least one service from the plurality of services supported by the UE are further executable to:
configure first power control parameters associated with a first service from the plurality of services supported by the UE,
wherein the first power control parameters are used by the UE to calculate a first transmission power for the first service and a second transmission power for the second service based at least in part on the first control parameters.
19. The apparatus of claim 18 , wherein the second transmission power for the second service is calculated by applying a delta offset value to the first transmission power for the first service.
20. The apparatus of claim 19 , wherein the delta offset value is derived by the base station based on an offset function of one or more of modulation coding scheme (MCS), resource block allocations, single input multiple output (SIMO) capabilities, or multiple input multiple output (MIMO) capabilities.
21. The apparatus of claim 12 , wherein the instructions are further executable by the processor to:
transmit an indication of at least one delta offset value from a plurality of delta offset values for the UE to calculate transmission power for a second service from the plurality of services based on receiving the single power control command associated with a first service from the plurality of services.
22. The apparatus of claim 12 , wherein the plurality of services include enhanced Mobile Broadband (eMBB) or ultra-reliable low latency communication (uRLLC) services.
23. A non-transitory computer readable medium for wireless communications, comprising code for:
establishing, at a base station, communication with a user equipment (UE);
determining that the UE supports uplink communication over a plurality of services;
configuring power control parameters for at least one service from the plurality of services supported by the UE; and
transmitting a single power control command to the UE for the UE to configure transmission power, based on the single power control command, for each of the plurality of services for the uplink communication.
24. The non-transitory computer readable medium of claim 23 , wherein the code for configuring the power control parameters for the at least one waveform from the plurality of services supported by the UE, further comprises code for:
configuring, based on a first power control loop, first power control parameters associated with a first service from the plurality of services supported by the UE; and
configuring, based on a second power control loop, second power control parameters associated with a second service from the plurality of services supported by the UE,
wherein the first power control loop is independent of the second control power loop.
25. The non-transitory computer readable medium of claim 23 , further comprising code for:
determining that the UE supports uplink communication over a plurality of waveforms; and
configuring the power control parameters for at least one waveform from the plurality of waveforms supported by the UE.
26. The non-transitory computer readable medium of claim 25 , wherein the code for configuring the power control parameters for the at least one waveform from the plurality of waveforms supported by the UE, further comprises code for:
correlating power control parameters for the plurality of waveforms with the single power control command.
27. The non-transitory computer readable medium of claim 25 , wherein the plurality of waveforms include at least one of cyclic prefix orthogonal frequency division multiple access (CP-OFDM)) or discrete fourier transform orthogonal frequency division multiple access (DFT-OFDM) waveforms.
28. The non-transitory computer readable medium of claim 23 , wherein the code for configuring the power control parameters for the at least one service from the plurality of services supported by the UE, further comprises code for:
correlating power control parameters for the plurality of services with the single power control command.
29. The non-transitory computer readable medium of claim 23 , wherein the code for configuring the power control parameters for the at least one service from the plurality of service supported by the UE, further comprises code for:
configuring first power control parameters associated with a first service from the plurality of services supported by the UE,
wherein the first power control parameters are used by the UE to calculate a first transmission power for the first service and a second transmission power for the second service based at least in part on the first control parameters.
30. An apparatus for wireless communications, comprising:
means for establishing, at a base station, communication with a user equipment (UE);
means for determining that the UE supports uplink communication over a plurality of services;
means for configuring power control parameters for at least one service from the plurality of services supported by the UE; and
means for transmitting a single power control command to the UE for the UE to configure transmission power, based on the single power control command, for each of the plurality of services for the uplink communication.
31. A user equipment (UE) for wireless communications comprising:
a memory configured to store instructions; and
a processor communicatively coupled with the memory, wherein the processor is configured to execute the instructions to:
establish communication with a base station;
receive, from the base station, a single power control command; and
calculate, in response to receiving the single power control command, transmission power for each of a plurality of services for uplink communications based on the single power control command.